Reversing-gear for engines



(No Model.) 2 Sheets-Sheet 1.

J. 'C. DEBES.

REVERSING GEAR FOR ENGINES.

No. 313,579. Patented Mar. 10,'1885.

(No Model.) 2 SheetsSheet 2.

0. DEBES.

RBVERSING GEAR FOR ENGINES. No. 313,579. Patented Mar. 10, 1886.

. features.

NlTE stares PATENT rricn.

JULIUS O. DEBES, OF MOUNT VERNON, OHIO.

REVERSING-GEAR FOR ENGINES.

EBPECIFICATION forming part of Letters Patent No. 313,579, dated March 10, 1885.

Application filed October 252, 1854. (X0 model.)

To all whom it may concern.-

Be it known that I, J {Inns 0. Burns, a citizen of the United States of America, residing at Mount Vernon, in the county of Knox and State of Ohio, have invented certain new and useful Improvements in Reversing-Gear for Engines, of which the following is a specification, reference being had therein to the ac eompanying drawings.

This invention consists in certain improvements, as hereinafter described and claimed, in gearing for reversing engines and cutting ofi steam at different points of the stroke without changing the lead.

I11 the accompanying drawings, Figure 1 is a top plan view showing the eccentric, clutch, and lever, and parts connected therewith. Fig. 2 represents a side elevation thereof. Fig. 3 represents a longitudinal section on the line 3 3 of Fig. 2. Fig. 4 represents an end view of the eccentric and the circular disk wherein it slides, with one of the sliding blocks in position. Fig. 5 represents an end elevation of a double lever or ,bell-crank for operating the eccentric in either direction and holding the same stationary in either position.

Fig. 6 represents an end elevation of the mov- V able clutch. Fig. 7 represents a front sectional view, and Fig. 8 a side sectional view, of one of the sliding blocks, to be presently described.

As heretofore constructed, reversinggear for engines has possessed several objectionable Vhen eccentrics have been employed, the mechanism for lifting or operating the same has usually been of a complicated character, and has resulted in more or less binding and side dipping. By my improvements I avoid these objections and secure advantages in the operation of the devices not securable by any other arrangement of which I am aware.

A represents the engine-shaft, to which is.

securely attached a disk, B, formed witha dovetailed, T, or other suitably-shaped groove, 0.

D represents the eccentric, which has a large central opening, and is mounted loosely upon the engine-shalt A, i E represents dovetailed or other suitablyshaped projections upon the eccentric, adapt.

ed to fit and slide within the groove 0, in the disk B. By this construction the eccentric will be held to the disk with freedom to slide across the face thereof.

F represents a double side lever or bellcrank, by means of which the eccentric D is slid across the face of the disk B, its movement governed, and by which said eccentric can be held in any desired position. This double lever has at each inner end fitted a sliding block, G, of steel or other suitable material, to allow for vibration and insure good wear. These blocks rest within side grooves, H H, in the center of the eccentric D, as clearly shown in Fig. 4 of the accompanying drawings, and have straight outer faces, which fit the side faces of the grooves H. and furnish a lasting wearing -surface. Centrally from these sliding blocks G projects a boss or projection, with each of which the inner ends of the bell-crank connect, by which arrangement the operation of the bell-crank insures the lifting and shifting of the eccentric right, in the center of its own gravity, whereby an easy movement thereof is secured, and all binding is prevented, even when there may be some lost motion.

It will be observed on reference to Fig. 7 of the accompanying drawings that the inner faces of the sliding blocks are circular, to adapt them to receive and form a smooth bearing-surface for the outer faces of the inner ends of the bell-crank. By this construction the bell-crank is permitted to move in an arc, while the eccentric moves in a straight line without any binding of the parts. By forming the eccentric D with central side grooves, H, and connecting the bell-crank therewith by means of the sliding blocks G in the manner shown and described, the bell-crank engages the di' rect center of the eccentric, thereby balancing the same and preventing any binding or side dipping, which is sure to result when gears, pinions, or quadrants are employed for actuating the eccentric. The upper or outer ends,

I I, of the double side lever or bell-crank F are connected by a transverse pin, J, secured in position by bolts and nuts or other suitable means, K, whereby the dual levers are securely connected was to permit of their 0perating in unison when actuated by a lever or Ether suitable device, to be presently referred From the connecting-pin .T extends rearwardly a link, L, by means of which the bellcrank or lever F is connected with a lever or other suitable device, M, by means of which the throw of the bell-crank, and consequently the movement of the eccentric, is governed, notch es or other suitable devices being formed in or connected with the lever whereby the eccentric may be retained in any desired fixed position. The double lever or bell-crank is mounted upon the engine-shaft A, but independently thereof, being secured to and held with capability of movement by a collar, N, fixed in position by bolt and nut or other suitable means, and having projecting pins 0, which serve as fulcrums or journals for the lever F, said collar being capable of ready adjustment upon the shaft to insure the proper fitting of the levers to the eccentric whenever such becomes necessary.

The collar or ring P is mounted upon the engineshaft' A, with capability of sliding longitudinally thereon, being prevented from turning by means of a feather, Q.

Having thus described my invention, what I claim is- 1. In a reversing-gear, an eccentric having side grooves in the center thereof, a doublearmed bell-crank or lever having pivotal bearing in a fixed collar capable of longitudinal adjustment upon the engine-shaft, and sliding blocks connected to the inner ends of the bellcrank or lever arms, and having straight out-er faces to adapt them to fit the side grooves in the eccentric and curved inner faces to receive and permit the free movement therein of the lever-arms, substantially as and for the purpose set forth.

2. 1n a reversing-gear, an eccentric having side grooves, and a collar rigidly secured to said shaft, and having. journals or hearingpins for said lever, and also having capability of longitudinal adjustment ,upon the shaft, substantially as and for the purpose set forth. 4. In a reversing-gear, the combination, with the shaft A, and disk B, of a shifting eccentric having central side grooves, a double bell-crank or lever adapted to engage said grooves,a longitudinally-sliding non-rotatable collar mounted upon the shaft, and a suitable link and pin for connecting said clutch and double bell-crank, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JULIUS G. DEBES. Witnesses:

HARRY BOYLE, JAMEs COLE. 

